Article
Engineering, Biomedical
Shilong Mao, Yang Liu, Fuyou Wang, Peng He, Xianzhe Wu, Xingshuang Ma, Yanfeng Luo
Summary: Artificial joint revision surgery often requires patient-specific prostheses for bone defect repair. This work presents a clinical case on the design and mechanical analysis of 3D-printed porous tantalum prostheses for knee revision, providing useful guidance for designing patient-specific prostheses.
INTERNATIONAL JOURNAL OF BIOPRINTING
(2023)
Article
Multidisciplinary Sciences
Liang Cheng, Hai-Bin Lin, Yu-Liang Zhang
Summary: This paper focuses on the lightweight design of the frame of a certain type of mobile pump truck. The response surface method is used to optimize the longitudinal beam structure of the frame, and the finite element method is employed to analyze the optimized and original designs. The results show that the optimized design reduces the dimensions of the longitudinal beam section and the weight of the frame, while maintaining satisfactory displacement and stress changes in various motion situations.
Article
Computer Science, Interdisciplinary Applications
Allen Lu, Shawn S. Ahn, Kevinminh Ta, Nripesh Parajuli, John C. Stendahl, Zhao Liu, Nabil E. Boutagy, Geng-Shi Jeng, Lawrence H. Staib, Matthew O'Donnell, Albert J. Sinusas, James S. Duncan
Summary: In this study, the authors proposed a semi-supervised neural network framework with biomechanical constraints for reliable motion estimation and strain analysis using 3D+ time echocardiography (4DE). By incorporating domain adaptation into the regularization framework, the network was able to learn more physiologically plausible displacements. The method was validated on in vivo data and showed potential for identifying infarct regions using estimated strain maps.
IEEE TRANSACTIONS ON MEDICAL IMAGING
(2021)
Article
Biotechnology & Applied Microbiology
Lin Han, Yongheng Li, Zhiyong Li, Hongdao Ma, Chenfeng Wang, Qiang Chen, Xuhua Lu
Summary: This study aimed to investigate the effect of rod contouring on single-segment posterior lumbar interbody fusion (PLIF) surgery using finite element (FE) method and retrospective study. The results showed that different rod curvature models had similar biomechanical behaviors in terms of range of motion, intersegmental rotation angle, and intradiscal pressure. However, the posterior tangent-based rod curvature model had a better distribution of fixation stress. Clinical data analysis also revealed a correlation between moderate rod curvature and positive rod curvature minus posterior tangent angle with better postoperative results.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2022)
Article
Mathematics, Applied
Francesco Dell'Accio, Filomena Di Tommaso, Allal Guessab, Federico Nudo
Summary: This study proposes a method of enriching the standard simplicial linear finite element by non-polynomial functions, and provides necessary and sufficient conditions for the existence of enriched element families. It is also shown that the enriched basis functions can be represented in a closed form using enrichment functions and functionals. Finally, numerical tests are conducted. This approach can address the under-performance of low-order elements in nearly incompressible materials.
APPLIED MATHEMATICS AND COMPUTATION
(2023)
Article
Materials Science, Ceramics
Ahmed Abdelgawad, Khaled Al-Athel, Jafar Albinmousa
Summary: This study investigates the impact of pores and TGO thickness on crack initiation and propagation in TBC layers due to thermal mismatch. The presence of pores changes the critical sites for crack initiation, and both TGO thickness and pores affect crack initiation temperatures and lengths. The study used image processing and FE modeling to analyze the effects.
CERAMICS INTERNATIONAL
(2021)
Article
Computer Science, Interdisciplinary Applications
Naijia Xiao, Rafi L. Muhanna, Francesco Fedele, Robert L. Mullen
Summary: A new finite element solution for planar frames under interval uncertainties is introduced in this work, which presents a new decomposition of the stiffness matrix to reduce overestimation. The IFEM equations are solved using an iterative enclosure method, and both primary and derived variables are simultaneously solved.
COMPUTERS & STRUCTURES
(2023)
Article
Biotechnology & Applied Microbiology
Shengbin Huang, Qinjie Ling, Xinxin Lin, Hao Qin, Xiang Luo, Wenhua Huang
Summary: This study used finite element analysis to compare the biomechanical differences between unilateral ATPS, bilateral ATPS, and VBS fixation. The results show that ATPS fixation can provide better stability and reduce the risk of loosening of the internal fixation device.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2023)
Article
Mechanics
Ramon Macedo Correa, Marcos Arndt, Roberto Dalledone Machado
Summary: In this study, the G/XFEM method is applied to analyze the free vibration of arches and curved beams, with comparisons to other methods to show that G/XFEM can achieve good accuracy even with coarse meshes and few enrichment levels.
EUROPEAN JOURNAL OF MECHANICS A-SOLIDS
(2021)
Article
Biology
Michael P. Castellani, Timothy P. Rioux, John W. Castellani, Adam W. Potter, Xiaojiang Xu
Summary: This paper outlines the development of a finite element human thermoregulatory model using an anatomically and geometrically correct human body model. The model simulates thermal responses through a passive and active system, providing insight into human thermoregulatory responses to non-uniform and transient environments. Comprehensive validation shows predictions are accurate and acceptable, with comparisons of predicted temperatures at 29 sites with measured values in comfort, hot, and cold conditions.
COMPUTERS IN BIOLOGY AND MEDICINE
(2021)
Article
Computer Science, Interdisciplinary Applications
Dhananjay Radhakrishnan Subramaniam, Liran Oren, J. Paul Willging, Ephraim J. Gutmark
Summary: Using finite element analysis, this study compared leakage and smooth muscle stresses of four different cuffed-tracheostomy tube designs. The Portex cuff showed the least amount of leakage and the greatest smooth muscle stress.
COMPUTER METHODS IN BIOMECHANICS AND BIOMEDICAL ENGINEERING
(2021)
Article
Biotechnology & Applied Microbiology
Xiaoli Zhu, Kangli Sun, Xin Xia, Yu Chen, Anqiang Sun, Xingming Chen
Summary: This study tested the mechanical properties of clavicular periosteum and constructed a 3D trachea geometry based on preoperative CT scanning images. The biomechanical loads on the repaired trachea may cause collapse or stenosis due to the softer and different mechanical properties of the periosteum. Numerical simulations provide references for biomechanical evaluation of trachea reconstruction surgery and may expand surgical indications.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2023)
Article
Computer Science, Interdisciplinary Applications
Liang Wang, Xue Zhang, Sheng Zhang, Stefano Tinti
Summary: A novel mathematical programming formulation is developed for the dynamic analysis of saturated porous media, which can be solved using modern optimization engines. The proposed computational scheme is verified against typical benchmarks and further implemented into the PFEM framework to address issues caused by large deformations. Several case studies illustrate the capability of the method for analyzing porous media with large deformations.
COMPUTERS AND GEOTECHNICS
(2021)
Article
Mathematics, Applied
Zhijie Du, Huoyuan Duan
Summary: This study analyzes a direct discretization method for computing the eigenvalues of the Maxwell eigenproblem. It utilizes a specific finite element space and the classical variational formulation, and proves the convergence of the obtained finite element solutions.
APPLIED MATHEMATICS LETTERS
(2024)
Article
Biotechnology & Applied Microbiology
Lei Zhu, Chi Zhang, Li Peng, Zifei Cheng, Xiuwen Liang
Summary: This study successfully established a finite element model for orthopaedic surgery simulation using a digital model and verified its accuracy through biomechanical experiments. The results showed that there was no significant difference in stress distribution and patient movement displacement between the model and real patients.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2023)